The first climbing ropes were ordinary manila- heavy, not very strong, easily frayed, and very static. The last one of those characteristics was probably the most dangerous. Even a short fall onto a static, stretch-free rope can be painful or fatal. While we still use static rope (technically it's semi-static) for rappelling, modern dynamic ropes are almost bungee-like in their stretchiness. As long as the anchors hold and there are no ledges or inconvenient trees in the way climbers can safely fall for almost unbelievably long distances these days.
Black Diamond Equipment 10mm Dynex 120cm Runner 380032
Black Diamond Equipment 18mm Nylon Daisy Chain - 140cm 390012
Black Diamond Equipment 10mm Dynex Runner - 240 cm BD380033